Shade holder for portable electric lamps



June 24, 1930. M. B. BOWEN SHADE HOLDER FOR PORTABLE ELECTRIC LAM PS Filed Aug. 20. 1929 FIG.2

INVENTOR MICHAEL E. sowzN nmm d- Q ATTORNFV Patented June 24, 1930 unrrsaf s'rATEs PATENT err res MICHAEL E. BOWEN, OF DECATUR, ILLINOIS, ASSIGNQR TO RABIES MANUFACTURING COMIPANY, F DECATUR, ILLINOIS, A CORPORATION OF. ILLINOIS SHADE HOLDER FOR EORTABLE ELECTR IG LAMPS V Application filed August 20, 1929. Serial No. 387,191.

My invention relates to that class of lamps provided with adjustable shades to shield the eyes. These shades are usually detachable from the holder, so as to permit chang ing them at the convenience of the user, and are usually made of glass. These shades are usually provided with an archshaped slot at one side, which spans the adjustable arm on the lamp which carries the lighting unit, and the shade holder usually comprises a pair of plates which are fitted to the edges of the slot in the shade, and are held by pairs of screws.

Owing to the fact that shades of this character are rarely uniform in configuration, there has been considerable difliculty in providing a suitable detachable shade holder, since, due to the irregularities of the glass, there is frequently much trouble in assembling, as the apertures 1n the plates fail to re ister, resultin in uite extensiveloss through breakage.

The object of my present invention is, to

provide a shade holder which will accommodate itself to the various irregularities in the glass, and which will not cause any breakage nor present any difliculty in asscn'ibling, regardless of how irregular the shade may be. 7 V Y My invention has for its further object,

to provide means which will yieldingly hold the plates together, .the spring-actuated means operating to accommodate the more rigid plates to the irregularities of the glass shade, and in th s way not only avoid any difficulty in assembling, but also insure the shadeholder clamping the edges of the slot in the shade securely at all times.

My means for accomplishing the foregoing objects may be more readily understood by reference to the accompanying drawings,

which are hereto annexed and are a part of this specification, in which- Fig. 1 1s a side elevat1on of a portable shade; g g

' Fig. 3 1s a cross-section, taken on 11116" refer to similar desk lamp equipped shade holder;

Fig. 2 is an enlarged fragmentary detail view, showing the shade holder on. the

As shown in thedrawings, the lamp com- 7 prises a standard 1, extending upwardly fronrabase 2, the standard 1 being provided with an arm 3, upon which is mounted a plate 4, the edge of which is provided with a V-shaped groove 5. A shade6, which en- 'closes an electric light bulb 7 ,is provided with a slot 8, adapted to span the arm 3.

In theslot S I mount my improved. support, which compr ses two plates, a front plate9 and a rear plate 10, both'being provided with, central archTlike' openings,on the 'VBIlZlCll edges of vwh1ch, 1n the front plate 9, I formll-shaped tongues or guides with 'my improved 11', which are fitted to and coincide with the V shaped groove .5 in the edge of the plate 4.

The front plate 9 isalso provided with a peripheral flange 12, which conforms to the configuration; of the shade 6. "Plates 9 and 1 0 are each provided with'two' pairs of registeringj apertures, the upper j apertures 13 in plate ,9 and the lower apertures l l in plate .10 being slotted,"the"upper apertures 13 in plate 10 being threaded to receive screws 15.

O11 tl1eface of the rear platejlO are formed shoulders 16, against which rest the upper ends of a pair of how springsl1" 7, the

lower endsof said bowsprings 17 resting against shoulders '18 formed on the bottom] of the front plate 9 at either side of its arch like opening. These bow springs 17 are provided with screw-threaded apertures 20,

which are adapted to receive screws 21 which extend through the lower apertures 14 in the front plate 9 and the slotted lower apertures 14 in the rear plate 10. It will be apparent to persons skilled in the art that by tightening these screws 21 the bow springs 17 will cause the rear plate 10 to yieldingly engage the glass shade G and compensate for any irregularities in its configuration. Any desired pressure may be produced in the clamping, by the degree to which the screws 21 are tightened.

Having described my invention,- what I "egard as new, and desire to secure by Letters Patent of the United States, is

1. A portable desk lamp having a shade provided with a slot, a shade holder mounted in said slot, said holder comprising front and rear plates having arch-like openings formed therein, registering apertures in said plates, the upper pair of apertures in the front plate and the lower pair of apertures inthe rear plate being slotted, the upper apertures in the rear plates being threaded, shoulders formed on said rear plate intermediate the upper and lower apertures at either side of said arch-like opening, shoulders on the bottom edge of the front plate at either side of said arch-like opening, a pair of bow springs, oneend of which rests against the shoulder on the rearplate, the other end of which rests against the shoulder onthe front plate, and screws which extend through said lower apertures in said plates and engage said bow springs.

2. A portable desk lamp having a shade provided with a slot, a shade holder mounted in said slot, said holder comprising rent and rear plates having arch-like openings formed therein, registering apertures in said plates, the upper apertures in said front plate and the lower apertures in said rear plate being slotted, the upper apertures in said rear plate being threaded, shoulders formed on said rear plate at either side of said arch-like opening intermediate the upper and lower apertures, shoulders on the bottom edge of said front plate at either side of said archlike opening, and yielding means to hold said plates together;

3. A portable desk lamp having a shade provided with a slot, a shade holder nount- MICHAEL B. BOWEN.

ed in said slot, said holder comprising front and rear plates having arch-like openings formed therein, registering apertures in said' plates, the upper apertures in said front plate and the lower apertures in said rear plate being slotted, the upper apertures in said rear plate being threaded, screws pass ing through said apertures in said plates, and spring means on one side of said plates engaged by said screws, whereby the tightening of said screws increases the tension of said springs. Y i

4. A portable desk lamp having a shade 

